Mt Takao is located at the borderline of warm-temperature zone and cool-temperature zone and various plants from both zones grow. There are a lot of naturally grown plants and their visitors can enjoy seasonal flowers. Over 1,500 kinds of plants are confirmed which is relevant to the number of kinds naturally grow in England. Also, over 60 kinds of plants are first found in Mt. Takao such as Takao Sumire (V. yezoensis f. discolor) and Takao Higodai (Saussurea sinuatoides).

Erigeron philadelphicus(Philadelphia fleabane)Compositae

Perennial herbs (grow for several years from their same root system) grow as weeds in spring. Often found them grow in clumps on grasslands. Are originally foreign species native to North America but imported in Taisho era as an ornament plants. Reproductive power is strong and it grows not only in Mt. Takao but also in open spaces and roadside in cities throughout Japan. Flowers are 2 cm in diameter and white or light pink. Buds face the ground but flowers bloom facing upward. Petals are thin and look very delicate. The Japanese name Haru-shion literally meaning aster tataricus in spring was named because purple flowers bloom in spring. Have hair on the entire plants and hollow stems. Leaves are paddle-shaped and the lower parts cover stems.